"post-install scripts"?

[Jonathan Kamens]

I see several references in <URL:http://www.cygwin.com/setup.html> to
post-install scripts for packages, and there have been several
recent references here to such scripts as well.  I'm unclear about
what this means in the context of Cygwin.  I know that in a RedHat
RPM, for example, the post-install script is run automatically after
the package is installed.  Is the same thing true here, i.e., is there
some way to put a script into a Cygwin package that will be run
automatically after the package is installed?  Or is what is being
discussed here a script that the user needs to run by hand?

Thanks,

  jik